Ammoniun Metavanabate
Specifications
| Item | Index | Index | Index | Index |
| A.R. | C.P. | Electro-plating grade | Catalyst grade | |
| Assay % | ≥99.0 | ≥98.0 | ≥99.5 | ≥99.0 |
| Water solubility test | Pass | Pass | Pass | Pass |
| Chlorides(CL) % | ≤0.005 | ≤0.02 | ≤0.001 | ≤0.02 |
| Sulphates(SO4)% | ≤0.01 | ≤0.02 | ≤0.005 | ≤0.02 |
| Carbonate(CO3)% | —— | —— | Pass | Pass |
| Iron (Fe)% | ≤0.005 | ≤0.01 | ≤0.001 | ≤0.005 |
| Arsenic (As)% | —— | —— | ≤0.0002 | ≤0.0002 |
| Heavy metal(Pb)% | —— | —— | ≤0.001 | ≤0.005 |
| Appearance | similar to white powder |
Packing& Storage
| Packing | 25kg cardboard drum, lined with double-layer plastic bag | |||||||
| Storage | 20℃, 2 years. | |||||||
| Shipping | Room temperature in China; may vary elsewhere | |||||||
General Information
1.1 Chemical & Physical Properties
| Common Names | Ammoniun metavanabate | Ammonium oxido(dioxo)vanadium | ||||||
| Structure |  |
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| CAS No. | 7803-55-6 | Boiling Point (℃) | N/A | ||||
| Molecular Weight | 116.978 | Melting Point (℃) | 200 °C | ||||
| Appearance | White powder | Vapor Specific Gravity | N/A | ||||
| HS Code | 28419030 | Flash Point (℃) | N/A | ||||
| Solubility | Soluble in hot water and dilute ammonia, slightly soluble in cold water, insoluble in ethanol. | Autoignition Temperature (℃) | N/A | ||||
1.2 Safety Information
| Safety Phrases | S26-S36/37/39-S45-S37/39-S22-S28 | |
| RIDADR | UN 2859 6.1/PG 2 | |
| WGK Germany | 3 | |
| Packaging Group | II | |
| Hazard Class | 6.1 | |
| SYMPTOMS | PREVENTION | FIRST AID | |
| Inhalation | Cough. Sore throat. | Use local exhaust or breathing protection. | Fresh air, rest. |
| Skin | Redness. Burning sensation. Itching. | Protective gloves. | Remove contaminated clothes. Rinse and then wash skin with water and soap. |
| Eyes | Redness. Pain. | Wear safety goggles. | First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. |
| Ingestion | Abdominal pain. Nausea. Vomiting. | Do not eat, drink, or smoke during work. Wash hands before eating. | Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention . |
1.3 Synthetic Route
After roasting the mixture of ferrovanadium powder and charcoal powder in a certain proportion by alkali hydrolysis method, sodium vanadate is generated by reaction with liquid alkali, and the clear liquid is concentrated and filtered, neutralized to pH 7.5~8 with hydrochloric acid, filtered, the filtrate is heated to 70~80 °C, ammonium chloride solution is added under stirring, and the precipitate is centrifuged, washed and dried to obtain ammonium metavanadate crystals.